Simulation and optimization of extractive distillation sequence with pre-separator for the ethanol dehydration using n-butyl propionate

Shirsat, Sanjay P.; Dawande, S. D.; Kakade, Seema Sudhakar

doi:10.1007/s11814-013-0175-8

Cited by 13 publications

(7 citation statements)

References 14 publications

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“…In this work, a new separation process that involves the use of microbubbles has been explored to investigate its feasibility for breaking the azeotrope of the ethanol‐water mixture. The purification of ethanol has been the focus of many recent studies as ethanol is one of the most widely used biofuels and any improvements in its production could potentially lead to significant reductions in environmental pollution …”

Section: Introductionmentioning

confidence: 99%

Separation of azeotropic mixtures using air microbubbles generated by fluidic oscillation

et al. 2015

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The feasibility of separating the azeotropic mixture of ethanol-water using microbubble-mediated batch distillation is presented. The effects of the depth of the liquid mixture in the bubble tank and of the inlet air microbubble temperature on the process efficiency were investigated. The enrichment of ethanol in the vapor phase was higher than that achieved at equilibrium conditions for all liquid ethanol mole fractions considered, including the azeotrope. On decreasing the depth of the liquid mixture and increasing the temperature of the air microbubbles, the separation efficiency of ethanol was improved. Ethanol with purity of about 98.2 vol % was obtained using the lowest liquid level (3 mm) in conjunction with the highest air microbubble temperature (908C). Separation was achieved with a small rise in the temperature of the liquid mixture (48C) at a depth of 3 mm and evaporation time of 90 min making this system suitable for treating thermally sensitive mixtures.

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Section: Introductionmentioning

confidence: 99%

Separation of azeotropic mixtures using air microbubbles generated by fluidic oscillation

et al. 2015

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“…Shirshat et al 71 suggested integration of the preseparator to EDS using n-butyl propionate as solvent, for feed of 72 wt % ethanol. Simulation results from CHEMCAD for this proposed configuration after optimization (to minimize capital cost alone) show savings of 6% thermal energy and 15% capital cost from the integration of the preseparator.…”

Section: Studies Employing Distillationmentioning

confidence: 99%

Review of Technological Advances in Bioethanol Recovery and Dehydration

Singh

Rangaiah

2017

Ind. Eng. Chem. Res.

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Today, at the threshold of the 21st century, rising apprehensions about the instability of oil prices, energy security, and adverse effects of fossil fuels on the environment, have made it imperative to search for alternative energy resources that are clean and sustainable. Among various biofuels, bioethanol is very promising. Bioethanol obtained from the fermentation of biomass is dilute and needs to undergo recovery and dehydration before its use as a fuel. This separation step is one of the energy-intensive steps in bioethanol production, which continues to motivate continual advances in bioethanol separation design. Hence, this review paper focuses on the recent advancements in the development of bioethanol recovery and dehydration processes. It is organized in the form of an annotated bibliography, whereby 54 journal papers and book chapters from the year 2008 to 2016 are summarized based on a classification according to separation technology employed. In addition, quantitative performance indicators (namely, cost and energy required for separation) in the papers/book chapters reviewed are presented on a consistent basis (per unit of bioethanol produced). All these will be useful to researchers and practitioners for technology selection and/or further advances in bioethanol separation.

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“…Shirsat et al . 34 rigorously optimized an ED configuration using ChemCAD, and found that the process of ethanol dehydration was more economical using a pre-separator column. Timoshenko et al .…”

Section: Introductionmentioning

confidence: 99%

Phase Behavior and Thermodynamic Model Parameters in Simulations of Extractive Distillation for Azeotrope Separation

et al. 2017

Sci Rep

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Extractive distillation (ED) processes for separating ternary mixtures of benzene-cyclohexane-toluene with dimethyl formamide (DMF) and N-methyl-2-pyrrolidone (NMP) were studied using Aspen Plus and PRO/II simulators. The Aspen Plus built-in binary interaction parameters for the toluene-DMF, benzene-NMP and cyclohexane-NMP systems resulted in inaccurate phase behavior calculations. The vapor-liquid equilibrium (VLE) for the three binary systems was regressed to illustrate the importance of using accurate model parameters. The obtained binary interaction parameters described the phase behavior more accurately compared with the built-in binary interaction parameters in Aspen Plus. In this study, the effects of the regressed and built-in binary interaction parameters on the ED process design are presented. The total annual cost (TAC) was calculated to further illustrate the importance of the regressed binary interaction parameters. The results show that phase behavior and thermodynamic model parameters should receive more attention during the research and development of ED processes.

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Simulation and optimization of extractive distillation sequence with pre-separator for the ethanol dehydration using n-butyl propionate

Cited by 13 publications

References 14 publications

Separation of azeotropic mixtures using air microbubbles generated by fluidic oscillation

Separation of azeotropic mixtures using air microbubbles generated by fluidic oscillation

Review of Technological Advances in Bioethanol Recovery and Dehydration

Phase Behavior and Thermodynamic Model Parameters in Simulations of Extractive Distillation for Azeotrope Separation

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